Injection engine



F. LANG INJECTION ENGINE Jan. 2, 1934.

Original Filed Dec. 1, 1930 m w Tm Franzf/ay MM nozzle is shown at a,the air chamber at b, the

combustion chamber at c, and the inlet and outlet Patented 52.11. 2, i34

irao STATES PATENT OFFICE INJECTION ENGINE Franz Lang, Munich, Germany,assignor to stein Lanova Aktiengesellschaft, Vaduz, Liechten- Originalapplication December 1, 1930, Serial No.

499,223, and

in Germany April 8, 1930.

Divided and this application filed June 30, 1933. Serial No. 678,355

1 Claim.

My invention relates to a fuel injection internal combustion engine ofthe type which embodies an air chamber in which fluid is compressedduring the compression stroke of the piston and .5 from which the fluidissues during the working stroke of the piston.

This application is a division of my copending application, Serial No.499,223, filed December 1, 1e30, for Fuel injection internal combustionengmes.

The instant invention contemplates an improved cylinder, combustionchamber, fuel nozzle, air chamber and valve relationship, to the end ofobtaining effective mixing of the charge and accomplishing simplicity ofconstruction.

My invention is illustrated in the accompanying drawing, in whichdicating the planes on which Figures 1 and 2, re-

Figure 1 is a vertical axial sectional view of those portions of theengine with which my invention is concerned;

Figure 2 is a vertical sectional view taken at right angles to the planeof Figure 1;

Figure 3 is a horizontal sectional view taken on the plane of the lineE--F of Figures 1 and 2, looking downwardly, the lines AB and 0-Dinspectively, are taken;

Figure 4 is a vertical axial sectional view, similar to Figure 1,showing another form of my invention;

Figure 5 is a vertical sectional view taken at right angles to the planeof Figure 4; and

Figure 6 is a horizontal sectional view taken on the plane of the lineK--L of Figures 4 and 5,

valves at d and e, respectively.

The mechanical arrangement is L-head in type, i. e. the head extendslaterally beyond the cylinder on one side and the inlet and outletpassageways are disposed alongside the cylinder, entering the combustionchamber from below, and the valves open upwardly. The combustion chamber0 is offset horizontally in relation to the cylinder, the nozzle aenters at one side, and the air chamber b, disposed over the cylinder,communicates with the combustion chamber on the other side. The inletand outlet passageways are formed in elbows which curve upwardly to theeach side. In plan, the combustion chamber is heart-shaped, the nozzle,centrally disposed, entering at the junction of the lobes thereof, andthe air chamber opening, which is flared, constituting or merging withthe apex thereof.

Upon the compression stroke of the piston, fluid from above the pistonis compressed in the air chamber b, and upon the working stroke of thepiston this fluid issues from the chamber at high velocity, the streamof fluid being directed toward the opposite combustion chamber wall fromwhich the fuel injection comes. There the stream splits, as indicated inFigure 3, the further movement of the fluid taking place in two oppositedirections circumferentially along the walls of the respective lobes ofthe combustion chamber, the stream on one side then passing through thepassage c on that side, and the stream on the other side passing throughthe passage 0' on that side, into the cylinder, where the streamscollide, all of which brings about effective mixing.

Suitable mechanism is of course provided to cause the valves to operateat the proper time in the cycle, and suitable mechanism is of courseprovided to cause the nozzle a to inject fuel into the combustionchamber at the proper time in the cycle, beginning with the finalcompression.

The form of my invention illustrated in Figures 4, 5 and 6 ismechanically T-head in type, i. e. the head is extended beyond thecylinder on both sides, where passages enter the combustion chamber frombelow, and upwardly opening valves, alongside the cylinder, controlthem. The various parts in these figures have been lettered. tocorrespond with the lettering in Figures 1, 2 and 3. The form shown inthese figures constitutes a duplication of the combustion chamber,nozzle, passageway and valve arrangement of the form shown in Figures 1,2 and 3, with the common air chamber, which is extended upwardly, asshown, so that its proper capacity may be had in the mechanicalarrangement, this air chamber having two ports, one communicating witheach of the combustion chambers.

Upon the compression stroke of the piston, fluid from above the pistonis compressed in the chamber b, and upon the working stroke of thepiston this fluid issues from the chamber, at high velocity, in bothdirections, 1. e. into each of the combustion chambers, the action oneach side sides thereof and each defining two contiguous valve pockets,each chamber having passages opening into said pockets from below,valves in said pockets and controlling said passages, injection nozzlesat the outer sides oi said combustion chambers and disposed to injectfuel thereinto. and a common air storage chamber opening into therespective combustion chambers in substantial alignment with saidnozzles, said combustion chambers communicating at their ends with saidcylinder.

FRANZ LANG.

